<!--
 * @Description: 
 * @Author: charles
 * @Date: 2021-08-19 09:47:27
 * @LastEditors: charles
 * @LastEditTime: 2021-08-19 09:50:17
-->
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <link rel="stylesheet" href="./css/small.css">
  <link rel="stylesheet" media="screen and (min-width:900px) and (max-width:1200px)" href="./css/middle.css">
  <link rel="stylesheet" media="screen and (min-width:1200px)" href="./css/big.css">
</head>
<body>
  <div class="container">

  </div>
</body>
</html>
